[Help-bash] declare -g -a array doing different things

[Bill Gradwohl]

Below please find two almost identical scripts - version1 & version2 and their output.

Here is a diff report :
address@hidden ycc# diff version*
5c5,6
< declare -g -a array=(function)
---
> declare -g -a array
> array=(function)


Why the different output? 

Version1 appears to be creating a local array, not a global array. 

The non array variable is treated correctly in both.


address@hidden ycc# cat version1
#!/bin/bash

func1(){
declare -g variable='function'
declare -g -a array=(function)
echo  ${variable} address@hidden
}

declare -g variable='main'
declare -g -a array=(main)
echo  ${variable} address@hidden
func1
echo  ${variable} address@hidden

address@hidden ycc# ./version1
main main
function function
function main

address@hidden ycc# cat version2
#!/bin/bash

func1(){
declare -g variable='function'
declare -g -a array
array=(function)
echo  ${variable} address@hidden
}

declare -g variable='main'
declare -g -a array=(main)
echo  ${variable} address@hidden
func1
echo  ${variable} address@hidden

address@hidden ycc# ./version2
main main
function function
function function



-- 
Bill Gradwohl